GU 10s

What makes one Gu10 last longer than another?

Better build quality, no vibration, lower voltage and better heat dissipation to name a some reasons.

Does more expensive last longer? What is a good brand?

i always use osram they seen to last the longest

I’ve got loads in my property, sad I know ; I always buy bulk own brand packs as cheap as I can but have also supplemented some with LED’s where lighting effect is more important than light output; the main problem with LED bulbs ATM is output is crap unless your prepared to pay many ££££££’s for a single bulb! My experience over 6 years is that price doesn't seem to make an awful lot of difference probably not worth paying the extra & individual bulbs can last twice as long as others from the same pack. I’ve never monitored it but I would say I usually get around a year from individual bulbs, occasionally they fail early but others will last a lot longer for no apparent reason. I’ve got one or two that have been going for 6 years now when others on the same circuit have poped all around them; Chinese quality control standards maybe, who knows

Watch out for cheap lamps (bulbs) if you have a dimmer switch. Branded ones have an inbuilt fuse which if they blow will save your dimmer - cheap ones don't.....

SB